
US
2012/0147184
A1
WIRELESS
NETWORK
CAMERA
SYSTEMS
CROSS-REFERENCE
TO
RELATED
APPLICATIONS
[0001]
This
application
is
a
continuation
of
US.
patent
application
Ser.
No.
13/022,644,
?led
Feb.
8,
2011,
Which
is
a
continuation
of
US.
patent
application
Ser.
No.
12/515,691,
?led
Feb.
19,
2010,
noW
issued
as
US.
Pat.
No.
8,050,206
on
Nov.
1,
2011,
Which
is
a
national
stage
application
of
and
claims
the
bene?t
of
International
Application
No.
PCT/
US2007/085308,
?led
on
Nov.
20,
2007,
Which
claims
prior
ity
to
US.
Provisional
application
Ser.
No.
60/896,158,
?led
on
Mar.
21,
2007
and
US.
Provisional
Application
Ser.
No.
60/866,587,
?led
Nov.
20,
2006.
The
disclosure
of
the
entire
prior
listed
patent
applications
is
considered
part
of
the
dis
closure
of
this
application
and
is
incorporated
by
reference.
BACKGROUND
OF
THE
INVENTION
[0002]
This
disclosure
generally
relates
to
providing
bat
tery
poWered
Wireless
netWork
camera
systems.
[0003]
NetWork
camera
systems
can
be
based
on
the
Inter
net
protocol
(IP)
and
use
Ethernet
based
networking
technol
ogy.
In
some
applications,
netWork
camera
systems
are
replacing
analog
closed
circuit
television
(CCTV)
due
to
various
factors,
such
as
accessibility,
ease-of-use,
cabling
scalability,
and
loWer
cost
of
deployment
and
operation.
With
the
ubiquity
of
Wireless
netWorks
such
as
WiFi
netWorks
(based
on
IEEE
802.1
1
standards)
and
the
emerging
WiMAX
netWorks
(based
on
IEEE
802.16
standards),
Wireless
net
Work
camera
systems
are
gaining
popularity
and
are
expected
to
become
the
dominant
platform
for
video
surveillance
applications.
[0004]
In
an
IP
surveillance
environment,
the
netWork
cam
era
system can
include
IP
cameras
connected
via
tWisted
pair
cabling
to
a
netWork
sWitch.
Alternatively,
the
netWork
con
nection
can
be
achieved
using
Wireless
local
area
netWorking
(LAN)
technology;
e.g.,
the
IEEE
802.11b
standard.
In
vari
ous
applications,
IP
cameras
can
include
a
Web-server
capa
bility
and
remote
clients
or
observers
connected
to
the
camera
via
standard
TCP/IP
interface
standards
such
as
FTP
or
HTTP.
IP
based
netWork
camera
systems
can
be
designed
using
commercial
off-the-shelf
(COTS)
components
from
a
diverse
number
of
suppliers.
BRIEF
SUMMARY
OF
THE
INVENTION
[0005]
This
speci?cation
describes
various
aspects
relating
to
battery
poWered
Wireless
netWork
camera
systems,
appa
ratus
and
methods
of
providing
such
systems.
For
example,
the
systems,
apparatus
and
techniques
described
herein
can
be
implemented
in
Ways
that
provide
Wireless
IP
video
sys
tems
that
require
no
poWer
cable
and
can
potentially
operate
on
standard
off-the-shelf
battery
solutions
for
over
a
year.
In
addition,
the
systems,
apparatus
and
techniques
described
herein
can
be
implemented
in
Ways
to
resolve
the
interfer
ence,
interoperability
and
reliability
problems
currently
asso
ciated
With
existing
Wireless
camera
systems.
[0006]
One
aspect
of
the
subject
matter
described
in
this
speci?cation
can
be
embodied
in
a
system
that
includes
a
battery
poWered
Wireless
camera
including
an
internal
battery
to
provide
energy
and
a
burst
transmission
unit
to
transmit
information during
burst
periods.
The
system
also
includes
a
base
station,
separated
from
the
battery
poWered
Wireless
camera,
in
Wireless
communication
With
the
battery
poWered
Jun.
14,
2012
Wireless
camera
to
receive
information
from
the
battery
poW
ered
Wireless
camera.
The
base
station
is
con?gured
to
pro
cess the
received
information
and
includes
a
Web
server
to
transmit
the
processed
information
to
a
client.
Other
embodi
ments
of
this
aspect
include
corresponding
methods,
appara
tus,
and
computer
program
products.
[0007]
Another
aspect
of
the
subject
matter
described
in
this
speci?cation
can
be
embodied
in
a
Wireless
camera
sys
tem
Which
includes
a
battery
poWered
Wireless
camera
including
an
internal
battery
to
provide
energy
and
a
burst
transmission
unit
to
transmit
information during
burst
peri
ods.
The
system
also
includes
a
base
station,
separated
from
the
battery
poWered
Wireless
camera,
in
Wireless
communi
cation
With
the
battery
poWered
Wireless
camera
to
receive
information
from
the
battery
poWered
Wireless
camera.
The
base
station
is
con?gured
to
process
the
received
information
and
including
a
Web
server
to
transmit
the
processed
infor
mation
to
a
client,
and
the
base
station
is
poWered
by
a
poWer
cable
connected
to
an
external
poWer
source.
The
burst
peri
ods
are
determined
based
on
at
least
one
of
a
Wireless
link
channel average
bandWidth
capacity,
a ?delity
of
images
transmitted,
and
a
latency
of
establishing
and
terminating
a
Wireless
connection
betWeen
the
battery
poWered
Wireless
camera
and
the
base
station.
[0008]
A
further
aspect
of
the
subject
matter
described
in
this
speci?cation
can
be
embodied
in
a
system
that
includes
a
base
station
Which
includes
a
?rst
receiver
con?gured
to
receive
information
in
a
?rst
Wireless
netWork
and
a
second
transmitter
con?gured
to
transmit
information
in
a
second
Wireless
netWork.
The
system
also
includes
a
remote
node
Which
includes
a
?rst
transmitter
con?gured
to
transmit
infor
mation
in
the
?rst
Wireless
netWork
and
a
second
receiver
con?gured
to
receive
information
in
the
second
Wireless
net
Work.
The
second
transmitter
is
further
con?gured
to
transmit
control
information
from
the
base
station to
the
remote
node
via the
second
Wireless
netWork
and
the
?rst
transmitter
is
further
con?gured
to
transmit
compressed
video
information
from
the
remote
node
to
the
base
station
via
the
?rst
Wireless
netWork.
Additionally,
the
second
receiver
in
the
remote
node
is
further
con?gured
to
operate
for
substantially
longer period
of
time
than
the
?rst
transmitter
in
the
remote
node.
Further
more,
the
second
receiver
in
the
remote
node
can
be
con?g
ured
to
operate
continuously
for
periods
of time
exceeding
5
hours
While
draWing
less
than
10
mW
of
poWer.
[0009]
Yet
another
aspect
of
the
subject
matter
described
in
this
speci?cation
can
be
embodied
in
a
method
that
includes
transmitting
information,
by
one
or
more
battery
poWered
Wireless
cameras
having
internal
batteries
in
a
Wireless
link.
The
transmitting
of
information during
burst
periods.
The
method
also
includes
receiving
information
by
a
base
station,
and
the
base
station
includes
a
Web
server.
The
method
further
includes
processing
the
received
information
in
the
base
sta
tion,
and
transmitting,
by
the
Web
server,
the
processed
infor
mation
to
a
client.
[0010]
In
another
aspect,
a
Wireless
camera
system
includes
a
battery
poWered
Wireless
camera
having
an
inter
nal
battery
to
provide
energy
and
a
burst
transmission
unit
to
transmit
information during
burst
periods.
The
system
also
includes
a
base
station,
separated
from
the
battery
poWered
Wireless
camera,
in
Wireless
communication
With
the
battery
poWered
Wireless
camera
to
receive
information
from
the
battery
poWered
Wireless
camera.
The
base
station
is
con?g
ured
to
process
the
received
information
and
the
burst
periods
are
determined
based
on
at
least
one
of
a
Wireless
link
channel
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